If you are experiencing sweat odor, it is generally considered to be caused by a bacterial infection. When a bacterial infection occurs, the odor occurs because the bacteria break down the sweat, so you can use antiseptic medications for external cleansing, such as using formalin solution or potassium permanganate solution. Consider using an antiperspirant talcum powder, such as a combination of deodorant and antiperspirant, to help reduce the odor. You may also consider removing armpit hair to improve symptoms, which can control bacterial growth and reduce the appearance of odor. If the symptoms are caused by abnormal secretion of sweat glands, laser treatment or minimally invasive surgery can also be considered to improve the symptoms. You should also avoid strenuous exercise, shower and change clothes regularly.